node.js解決跨域方案

服務端

1、通過使用cors模塊解決跨域問題

var express = require('express')
  , cors = require('cors')
  , app = express();
 
app.use(cors());
 
app.get('/products/:id', function(req, res, next){
  res.json({msg: 'This is CORS-enabled for all origins!'});
});
 
app.listen(80, function(){
  console.log('CORS-enabled web server listening on port 80');
});　　

2、NodeJS+Express解決跨域問題：Access-Control-Allow-Origin

// 允許跨域訪問
app.all('*', function(req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Headers", "X-Requested-With");
    res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
    res.header("X-Powered-By",' 3.2.1')
    res.header("Content-Type", "application/json;charset=utf-8");
    next();
});

 

客戶端

反向代理 或者jsonp 

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